<?php

/**
 * Filter by node_access records.
 */
class views_handler_filter_node_access extends views_handler_filter {

    function admin_summary() {
        
    }

    function operator_form() {
        
    }

    function can_expose() {
        return FALSE;
    }

    /**
     * See _node_access_where_sql() for a non-views query based implementation.
     */
    function query() {
        if (!user_access('administer nodes')) {
            $table = $this->ensure_my_table();
            $grants = array();
            foreach (node_access_grants('view') as $realm => $gids) {
                foreach ($gids as $gid) {
                    $grants[] = "($table.gid = $gid AND $table.realm = '$realm')";
                }
            }
            $grants_sql = '';
            if (count($grants)) {
                $grants_sql = implode(' OR ', $grants);
            }
            $this->query->add_where('AND', $grants_sql);
            $this->query->add_where('AND', "$table.grant_view >= 1");
        }
    }

}
